Update concept.md

Author: oblomov-dev

docs/technical/concept.md

@@ -186,14 +186,14 @@ In standard UI5 behavior, updating the XML View typically triggers a full re-ren
 Consider this example:
 
 ```abap
-CLASS z2ui5_cl_demo_app_025 DEFINITION PUBLIC CREATE PUBLIC.
+CLASS z2ui5_cl_app_partial_rendering DEFINITION PUBLIC CREATE PUBLIC.
   PUBLIC SECTION.
     INTERFACES z2ui5_if_app.
     DATA text TYPE string.
     DATA partly TYPE abap_bool.
 ENDCLASS.
 
-CLASS z2ui5_cl_demo_app_025 IMPLEMENTATION.
+CLASS z2ui5_cl_app_partial_rendering IMPLEMENTATION.
   METHOD z2ui5_if_app~main.
 
     text = text && ` text`.